Improvement in permutatiobpiiocks



Uhr.

WILn-AM. HALL, or BOSTON, MAssAonusETTs.

Letters Patent No. 90,096,1-lctfed lul/[Yay 18, 1869.

IMPROVEMENT IN PnRMuTATIoNim-:cxs

The Schedule 4referred to in these Letters Patent and making part of thesame.

l v Y To all whom it may concern: f i

Be it knownthat I, WILLIAM HALL, of Boston, in

` [the `county of Suffolk, and State `of Massachusetts, have r invented.certain new and useful Improvements in the Gonstructionof' Dial-Locks;and Ivdo hereby declare the following to beso full andl exact adescription as to enable those skilled iu the art to make and use myinvention. y

, As the nature of my invention consists in4 the peculiar arrangementand `construction of parts, it can 'only be understood byerraminatiori'`of the specication `and drawings. f

u l e, Drawings. i l e Figure l is an elevation of the iiout of thelock, showing the dial and knob. I

Figure 2 is an elevation of the back of the lock, the

r plate removed, showing the lock as it appears when i the bolt isthrown out, andthe internal gear so thrown Y e `out of adjustment thatthe holt cannot be` drawn back e until all the parts are readj usted,whichreadjustment Y i l can only be effected by aperson who has the,key-numbers. i l y -r Figure 3 shows in elevation, as before, the lockVin adjustment. r

il' Figure 4is a horizontal section, showing the rela-v` tive` pos'itionof the parts. l y

Figure 5 `is au elevation of the lock, showing the dog M, for operatingthetumblersO O O", iig. 4.

Figure 6 shows, in elevation, the cam G G, lever O,

l l `and latch D, the wheel L aud dog M being removed.

In the drawings, A representsthe casingof the lockl attached to the doorA', gs. `l and 4.

Q, figs.l l and 4,.is" the knob of the lock, to which is e attached thespindle K, fig. 6, and the graduated disk T, iig. 1. V'

Permanently attached to the spindle K is. the cain G G,g. 6, one end ofwhich, G, operates a tuinbler, to send back and forth the bolt B.

As the cam G does not act directly uponn lthe bolt itself, but` upon thelever G, which is pivoted to the bolt, it follows that if the lever C C,as seen in iig. 6, should be elevated, as shown in tig. 2, the cam G it`revolves'would not come inV contact with it, Yand therefore would notmove the bolt.

If the end G', of the cam G' G, he swung around, so

` as to come in contact with the lever C, it will raiseY it up, as shownin lig. 5.

\ D D' is a latch, hung ,upon a pivot, N, aixedto the casing of thelock. The end Dof this latch passes through a slotorchannel made in theend C" of the Vlever O, so that both latchand lever lnust necessarilymove up and down together, yet the level-O is free tu traverselongitudinally when the bolt B slides in or out.

F is a buttress, against which the end C, of the latch f G, restsivhenelevated, as` shown in fig. 2. As the lever U is attached to the holt B,it will be seen that the bolt `can be pushed' back only when the leveris down,` as represented in fig. 3, for if the leverwere up, the

end C" would come in contact with the buttress F, gs. 2 and 5, and thusprevent the. bolt from being sent back.

The wheel L, figs. 2, 3,4, and 5, is attached loosely Y to the spindleK, but has a stud, H', figs. 4 and 5, ex-

tending toward the cam G, and so placed that it will l come in contactwith the stud H, in the, cam G G', so

that the cam G cannot make a complete revolution without moving thewheel L.

llhis wheel L has a notch, L', in its periphery, irto which the boss E',of the latch D, may drop, as repj .resented in fig. 3.

I is a spring-brake, bearing on the wheel L.

M, figs. 4 and 5, is a dog, moving freely Varound th spindle K, butbeing so connected with the wheel L that it alwaysmoves it, though, byloosening the setscrew inM', fig. 5, it `may be adjusted so 'as to bringthe projection M' at anyv desired distance from the notch L'. v

This projection M', shown in section in iig. 4, comes in contact with aprojection, or pin S, figs. 2 and 3, on the tumbler O, iig. 4, andcauses it to revolve.

Each of the turnblers O O' O is provided with a Y projecting pin, which,cominggin contact .with each other, causes the tumblers to revolve.

l? P 1?", iigs. 2 and 4, are notches cut into the tumblers O O O". Whenthese notches are opposite to each other, as represented in. fig. 4, andoccupy the positionrepresented by P",'iig`. 3, the projectingplate E,attached to the latch D, may drop into these notches,

as shown iniig. 3, and thus to allow the lever C and latch D to fall,yunless they are also held by the projectiou E', resting ou the rim ofthe Wheel L, as lshown in 5.

Iigthe notch L', of the wheel L, is in conjunction with the threenotches P P. P", and allot them in the position `represented in iig. 3,the projection E', ofthe latch D,`will drop into the notch L', and thusallow both latches to fall, provided the -end G', g. 6, of the' cam G,uncovers the notch L'. y

U, iig. 2, represents spring-brakes, hearing-upon the tumbler-s O O lig.4. T, iigs. l and`4, is a graduated disk, attached to and revolving withthe knob. Q, `the'marks forming the 'divisions being numbered.

'1" is a Vernier plate, having a single mark.

From "the above description, it Will be seen thatthe v bolt in my` lockcan only be thrown back when tlr'ejlever G and latch D are down, whichcan happen onIy when the notches P P' P", of the tumblers O O' O",

'and the notch L', in the wheel L, are all in conjunction, and i'n'theposition represented iu fig. 3; and further, when the end G', of the camG G, is not `in a vertical position.

I The operation and adjustment of my lock areas follows l:

To throw back the bolt, the dog M being in the position shown in fig. 5,the lever C and'latch D raised, and the notches P P P and L out ofconjunction, the knob Q is turned to the right, until the pins S S S,

fig. 2, are in contact with each other, causing the tumv blers 0 O O" tomove together. When a certain division of the graduated disk, say 8%,comes under the mark on the Vernier plate T', which indicates when thenotch P", of the tumbler O, is under the projecting plate E, the knob Qis revolved to the left, until the division stopped at 8?; haspassed themark on the vernier three times, and another number, say 233, is underthe mark; this puts the notch P under the plate E. The knob is nowrevolved to the right, and this second number(23) is made to pass theverniei mark twice, and until a third division, say 3%, is under themark on the vernier. The notches P P P" are now in the position shown infig. 4.'.

' The notch L', in the wheel L, fig. 5, is now brought under theprojection E', which is accomplished by turning the knob once more tothe left, and causing the last division stopped at (3%) to pass thevernier once, and until another division, 22%, comes under it. Now] allthe notches are in conjunction, and by turning the knob again to theright, the end G', of the cam G' G, is moved from under the projectionE', thus allowing the lever C and latch D to fall, and take the positionshown in iig. 3. A further revolution of the knob causes the end G ofthe cam to act on the lever C, and through it to move the bolt B.

The dog M M may be set in any desired position.

but such a change necessitates an entire change of numbers. Thesenumbers may be found by inserting a pin, or key, into the small hole inthe back of the lock, but not shown in the drawing, opposite the notchP, fig. 3, and turning the knob Q alternately right and left, as abovedescribed, until the pin passes into the notches P P P, noting whatdivision ofthe graduated disk is under the mark on the vernier when thepin enters each notch, and the number of times the knob is revolvedbefore the pin enters either notch.

When the notches P P P" are in conjunction, the tumblers O O O areremoved, by removing the back plate of the lock, to see when the notchL' is under the projection E', noting at the same time the number ofturns of the knob Q, and the division of ,the graduated disk under thevernier, as before.

What l claim as my invention, is-

1.` The combination of the adjustable dog M 'with the wheel L,substantially as described, and for the purpose set forth.

2. The combination ofthe cam G G with the wheel L, sliding lever C G',and latch D D', all operating as described, and for the purpose setforth.

3. The combination of the lever C C with the latch D D', arrangedand`operating substantially as described, and for the purpose set forth.

' WM. HALL.

Witnesses:

A. HUN BERRY, vFRANK G. PARKER.

